Table 2.

The petrographic modal composition of the AEB_IIIG sandstone microfacies.

Components (%)	Quartz	Lithic Fragments	Feldspars	Glauconite	Quartz Cement	Carbonate Cement	Pyrite	Clays	Point Count Porosity	Total
Quartz arenite (MF1)
Min	50	0	0	0	0	0	4.4	0.8	5.2
Max	70	0	3.6	11.2	6.4	0	14.4	9	22
Avg	64	0	1.4	3.9	3.5	0	7.2	4.3	15.7	100.0
Calcareous quartz arenite (MF2)
Min	45	0	0	0	0	7	2.4	3	1.8
Max	60.8	3.2	6.04	6.4	8.4	12	7	4.8	21.6
Avg	56.3	1.3	5	3.8	3.5	8.5	4	3.5	14.1	100.0
Glauconitic quartz arenite (MF3)
Min	42	0	3	10	6	0	3	5	18
Max	45	0	5	14	8	3	6	6.6	20
Avg	46.2	0	3.7	12	7	1.4	5	5.7	19	100.0
Quartz wacke (MF4)
Min	33.2	0	0	0	0	0	2	46	9.2
Max	37	2	0	0	2	0	5.2	52.4	12
Avg	35.6	2	0	0	1	0	3	48	10.4	100.0
Lithic wacke (MF5)
Min	34.4	12.8	0	1	0	0	7	27.2	2.4
Max	41	15	0	5	0.8	3	12.4	34.4	5
Avg	37.5	13.9	0	3	0.4	1.7	9.1	30.6	3.8	100.0
Lithic arenite (MF6)
Min	51.6	19.2	0	0	7.2	0	2	3.8	5
Max	60	21	0	1.2	14.4	1	5	4.8	8
Avg	56.5	19.4	0	0.6	9.8	0.5	2.7	4.5	6	100.0
Mudstone (MF7)
Min	4.4	0	0	0	0	0	0	87	3
Max	7.3	2	0	1.2	0	0	0	91.2	4.4
Avg	6.2	1	0	0.8	0	0	0	88.6	3.4	100.0